IFS Authority Question

I am not an IFS security expert and am trying to learn;

In the example below, I have the following questions:

1. Does QPGMR have private authority to FILE.PDF

2. Is there a need for QPGMR to have this entry as *PUBLIC has exactly what is required

3. If the OWNER was FILEOWNER, what implied authority does FILEOWNER have, if any or would authority rights be accessed vis *PUBLIC?

Work with Authority

Object . . . . . . . . . . . . : /??????/FILE.PDF
Type . . . . . . . . . . . . . : STMF
Owner . . . . . . . . . . . . : QPGMR
Primary group . . . . . . . . : *NONE
Authorization list . . . . . . : *NONE

Type options, press Enter.
1=Add user 2=Change user authority 4=Remove user

Data --Object Authorities--
Opt User Authority Exist Mgt Alter Ref

*PUBLIC *RWX X X X X
QPGMR *RWX X X X X

Michael Smith